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J. B. G. A. CANET. i CARRIAGE FOR QUICK PIRING GUNS.

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J. B. G. A. CANET. CARRIAGE PoR QUICK FIRING GUNS.

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IINr'rnn STATES PATENT FFICE.

JEAN BAPTISTE GUSTAVE 'ADOLPHE CANET, OF PARIS, FRANCE, ASSIGNOR OF ONE-HALF TO THE SIR JOSEPH WHITWORTH & COMPANY, LIMITED,

OF MANCHESTER, ENGLAND.

CARRIAGE FOR QUICK-FIRING GUNS.

SPECIFICATION forming part of Letters Patent No.'499,516, dated June 13, 18.93.

Application filed December 8, 1892. Serial No.4541502. (No model.) Patented in France December 31, 1887; N- 187,908| and in England February 11. 1888, No. 2,075.

To all whom it may concern Be it known that I, JEAN BAPTISTE GUSTAVE ADOLPHE CANET, engineer, a citizen of the Republic of France, and a resident of Paris, France, have invented certain new and useful Improvements in Carriages for Quick-Firing Guns, (for which I have obtained patents in Great Britain, No. 2,075, dated February l1, 1888, and in France, No. 187,908, dated December 3l, 1887,) of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to improvements in carriages for quick-firing guns. y

In the accompanying drawings which illustrate the said invention, Figure 1 is a side elevation partly incentral section of a gun' carriage showing a portion of the gun mounted therein. Fig. 2 is a detail view of the mechanism for effecting the vertical pointing of the gun. Fig. 3 is a transverse section, and Fig. 4 is a longitudinal section on the line a: Fig. 3, showing a modified forln of Vthe brake cylinder. Fig. 5 is a horizontal section through the mechanisinshown in Eig. 2 drawn to au enlarged scale. Fig.A 6 is a sectional plan of the recuperator apparatus, and Fig. 7 is partly an end view and partly a transverse vertical section of the gun mounting.

Like letters indicate corresponding parts in all the figures.

A is the gun.

Bis the frame of the carriage which is supported upon a pivot plate C in any ordinary or usual manner.

Dis a hydraulic cylinder or jacket which surrounds the gun and which is supported by trunnions D or otherwise in the frame Ba The said cylinder or jacket D which constitutes the brake cylinder is closedat the ends by glands D?. lwith liquid.

E is a collar formed on the gun and arranged'to be inclosed by the cylinder D and form the brake piston. The said piston is made to have alittle clearance in the cylinder D so thatv iiq'uid can pass from one side thereof to the other. The external diameter of 'lhe brake cylinder is filled ,the gun is made larger in front of the pistou Ethan behind the said piston. Consequently 5o the volume of the anuularchainber between the gun and the cylinder D is greater when the gun is run out than when it is run in.

In the modified form of brake cylinder shown in Figs. 3 and 4, the piston E which 55 fits freely in the cylinder is provided with one or more longitudinal grooves E in its periphery. Projectinginto each said groove E is arib or strip E2 which is fixed in the brake cylinder. When the gun recoilsthe liquid 6o passes from one side of the piston to the other through the spaces between the bottom of the grooves E and the faces of the strips E? and as the strips are made of variable depth from end to end, thesize ot' the thoroughfare 65 for the passage of the liquid Varies at each part of the recoil and consequently the resistance to recoil is varied.

, F isa recuperator cylinder fitted with a piston G.

Il is a rod attached to the'piston at one end and arranged at its other end to slide through a supporting bracket I which is suitably conn ected with the gun carriage as hereinafterv described. 7 5

K K are recuperator springs threaded on the rod H and bearing at one end against the piston G and at the other end against a transverse bar L which is attached by side rods L' to the cylinder D.

D3 is athoroughfare leading from the frontof the brake cylinder D to the recuperator cylinder'FI p D4 isa non -return valvevplaced in the thoroughfare D3. The said valve is arranged to open toward the cylinder F so`as to allow the liquid toflow from the brake cylinder into the recuperator cylinder. The said valve is maintained on its seat except during recoil by a spring D5. A small orifice D6 is formed 9o in the valve to allow the liquid to flow back again into the brake cylinder. In some cases the valve D4 is dispensed with.

The action of this apparatus is as follows: When the gun recoils, the liquid displaced from the brake cylinder by the part of the the gun again after the recoil is spent by forcing the liquid back through the small orifice Doin the valve D4into the brake cyh inder. In lien of the springs K, K I may employ a suitable fluid which is upon recoil put under pressure by the movement of the recuperator piston.

For effecting the Vertical pointing of the gun, I provide as follows-that is to say: I tix to the frame B on each side of the gun a bracket M, and I provide a ring N through which the gun is capable of sliding. On each side of the ring N I fix a sector O in which is formed a curved groove or slot O struck from the same center as the trunnions of the gun.i The sector O on theleft side of the gun is toothed. At the rear extremity of each bracket M I form or fix thereto a block M' which is adapted to Work in or engage with the slot O and prevent to and fro sliding movement of the ring N While allowing the said ring to rise and fall as the gun is turned about its trunnions. I fix the back sight N2 on the ring N. By this arrangement the gunner is enabled to keep his eye along the line of sight during recoil. In bearings on the bracket M at the left side of the gun I mount ashaft P on which is fixed a worm or endless screw I and a hand-Wheel Q for turning the same.

R is a worm Wheel carried by the bracket and gearing with the said worm P. On the axle of the Worm wheel is fixed a pinion R which gears with the vadjacent toothed sector O. By rotating the hand wheel Q the gun can be turned about its trunnions to eiect the vertical pointing. The lateral training of the gun is effected by pushing the shaft P to the right or to the left as required.

What I claim is l. The combination of the gun A provided with the collar E forming the brake piston, the gun being of larger diameter in front of the said collar than behind it, a brake cylinder D inclosing the collar E and through which the gun can slide, said cylinder being supported by the gun-carriage, and a recuperator device communicating With the brake cylinder by a passage D3 substantially as described, and for the purpose specified.

2. The combination of the gun A provided with a collar E forming the brake piston, the gun being of larger diameter in front of the said collar than behind it, a brake cylinder D inclosing the collar E and through which the gun can slide, said cylinder being supported by the gun carriage, a recuperator cylinder F communieatingwith the brake cylinder by a passage D3 in which is placed avalve D4 opening from the brake cylinder, a small hole being provided in the valveto permit the return of the liquid to the brake cylinder,a piston G working in the cylinder F, and recuperator springs K K acting on the said piston, substantially as, and for the purpose, specified.

3. Thecombination, with the gun A and thecarriage B, of a ring N which carries the back sight and through which the gun can slide, sectors O, O fixed to the said ring, segmental circular grooves O O' formed in the said sectors and having the same centers asthe trunnions, curved slide blocks iixed to the carriage and engaging the said grooves, and means for effecting the vertical pointing of the gun substantially as, and for the purpose, specified.

In testimony whereof I have hereunto signed my name in the presence of two subscribin g Witnesses.

JEAN BAPTISTE GUSTAVE ADOLPHE CANET.

Vitnesses:

Ron'r. M. I-looPER, H. P, KING. 

